Sweden-Number/dlls/msvcrt/time.c

172 lines
4.4 KiB
C

/*
* msvcrt.dll date/time functions
*
* Copyright 1996,1998 Marcus Meissner
* Copyright 1996 Jukka Iivonen
* Copyright 1997,2000 Uwe Bonnes
* Copyright 2000 Jon Griffiths
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <time.h>
#ifdef HAVE_SYS_TIMES_H
# include <sys/times.h>
#endif
#include "msvcrt.h"
#include "msvcrt/sys/timeb.h"
#include "msvcrt/time.h"
#include "winbase.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
/* INTERNAL: Return formatted current time/date */
char* msvcrt_get_current_time(char* out, const char* format)
{
static const MSVCRT_time_t bad_time = (MSVCRT_time_t)-1;
time_t t;
struct tm *_tm = NULL;
char *retval = NULL;
if (time(&t) != bad_time && (_tm = localtime(&t)) &&
strftime(out,9,format,_tm) == 8)
retval = out;
return retval;
}
/**********************************************************************
* mktime (MSVCRT.@)
*/
MSVCRT_time_t MSVCRT_mktime(struct MSVCRT_tm *t)
{
MSVCRT_time_t res;
struct tm tm;
tm.tm_sec = t->tm_sec;
tm.tm_min = t->tm_min;
tm.tm_hour = t->tm_hour;
tm.tm_mday = t->tm_mday;
tm.tm_mon = t->tm_mon;
tm.tm_year = t->tm_year;
tm.tm_isdst = t->tm_isdst;
res = mktime(&tm);
if (res != -1)
{
t->tm_sec = tm.tm_sec;
t->tm_min = tm.tm_min;
t->tm_hour = tm.tm_hour;
t->tm_mday = tm.tm_mday;
t->tm_mon = tm.tm_mon;
t->tm_year = tm.tm_year;
t->tm_isdst = tm.tm_isdst;
}
return res;
}
/**********************************************************************
* _strdate (MSVCRT.@)
*/
char* _strdate(char* date)
{
return msvcrt_get_current_time(date,"%m/%d/%y");
}
/*********************************************************************
* _strtime (MSVCRT.@)
*/
char* _strtime(char* date)
{
return msvcrt_get_current_time(date,"%H:%M:%S");
}
/*********************************************************************
* clock (MSVCRT.@)
*/
MSVCRT_clock_t MSVCRT_clock(void)
{
struct tms alltimes;
clock_t res;
times(&alltimes);
res = alltimes.tms_utime + alltimes.tms_stime +
alltimes.tms_cutime + alltimes.tms_cstime;
/* FIXME: We need some symbolic representation for CLOCKS_PER_SEC,
* 10 holds only for Windows/Linux_i86)
*/
return 10*res;
}
/*********************************************************************
* difftime (MSVCRT.@)
*/
double MSVCRT_difftime(MSVCRT_time_t time1, MSVCRT_time_t time2)
{
return (double)(time1 - time2);
}
/*********************************************************************
* time (MSVCRT.@)
*/
MSVCRT_time_t MSVCRT_time(MSVCRT_time_t* buf)
{
MSVCRT_time_t curtime = time(NULL);
return buf ? *buf = curtime : curtime;
}
#define SECSPERDAY 86400
/* 1601 to 1970 is 369 years plus 89 leap days */
#define SECS_1601_TO_1970 ((369 * 365 + 89) * (ULONGLONG)SECSPERDAY)
#define TICKSPERSEC 10000000
#define TICKSPERMSEC 10000
/*********************************************************************
* _ftime (MSVCRT.@)
*/
void _ftime(struct _timeb *buf)
{
TIME_ZONE_INFORMATION tzinfo;
FILETIME ft;
ULONGLONG time;
DWORD tzid = GetTimeZoneInformation(&tzinfo);
GetSystemTimeAsFileTime(&ft);
time = ((ULONGLONG)ft.dwHighDateTime << 32) | ft.dwLowDateTime;
buf->time = time / TICKSPERSEC - SECS_1601_TO_1970;
buf->millitm = (time % TICKSPERSEC) / TICKSPERMSEC;
buf->timezone = tzinfo.Bias;
buf->dstflag = (tzid == TIME_ZONE_ID_DAYLIGHT?1:0);
}
/*********************************************************************
* _daylight (MSVCRT.@)
*/
int MSVCRT___daylight = 1; /* FIXME: assume daylight */
/*********************************************************************
* __p_daylight (MSVCRT.@)
*/
void *MSVCRT___p__daylight(void)
{
return &MSVCRT___daylight;
}